Guatemala Cities Layer Source: Ministerio de Agricultura, Ganaderia y Alimentacion (Jun 2001) Description: Populated places in Guatemala Spatial Resolution: 1:250,000

Brazil Cities Layer Source: DPI (Images Processing Division) - National Institute of Spatial Researches - Brazil (2000) Description: Cities or major population centers in Brazil. Spatial Resolution: Unknown

Kenya Cities Layer Source: Center for International Earth Science Information Network - CIESIN - Columbia University, International Food Policy Research Institute - IFPRI, The World Bank, and Centro Internacional de Agricultura Tropical - CIAT (2011) Description: The Global Rural-Urban Mapping Project, Version 1 (GRUMPv1) consists of estimates of human population for the years 1990, 1995, and 2000 by 30 arc-second (1km) grid cells and associated data sets dated circa 2000. A proportional allocation gridding algorithm, utilizing more than 1,000,000 national and sub-national geographic units, is used to assign population values (counts, in persons) to grid cells. This data set is produced by the Columbia University Center for International Earth Science Information Network (CIESIN) in collaboration with the International Food Policy Research Institute (IFPRI), The World Bank, and Centro Internacional de Agricultura Tropical (CIAT).This data provides populated place (point) data with consistent population estimates. Spatial Resolution: Unknown

Thailand Cities Layer Source: Digital Chart of the World (1992) Description: Populated places. Spatial Resolution: 1:1,000,000

Pakistan Cities Layer Source: Digital Chart of the World (1992) Description: Populated places Spatial Resolution: 1:1,000,000

Oaxaca Cities Layer Source: Instituto de Investigaciones Electricas (received April 2003) Description: Populated places in Oaxaca Spatial Resolution: Unknown

Afghanistan Cities Layer Source: Afghanistan Information Mangement Service (AIMS) (1997) Description: Settlements of Afghanistan Spatial Resolution: 1:100,000

Honduras Cities Layer Source: Oficina de Electrification Social (received Aug 2003) Description: Populated places in Honduras Spatial Resolution: Unknown

Nicaragua Cities Layer Source: Comision Nacional de Energia (received Mar 2004) Description: Populated places in Nicaragua Spatial Resolution: Unknown

Vietnam Cities Layer Source: Digital Chart of the World (1992) Description: Populated places Spatial Resolution: 1:1,000,000